Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2012

Compensation and Retirement Disclosure [Abstract]

Net Periodic Benefit Cost

The components of Dominion's provision for net periodic benefit cost were as follows:

	Pension Benefits						Other Postretirement Benefits
	2012			2011			2012			2011
(millions)
Three Months Ended June 30,
Service cost	$	29		$	27		$	11		$	12
Interest cost	67			65			20			24
Expected return on plan assets	(107		)	(111		)	(20		)	(19		)
Amortization of prior service cost (credit)	1			1			(3		)	(4		)
Amortization of net loss	33			24			1			3
Settlements and curtailments	—			—			—			(1		)
Net periodic benefit cost	$	23		$	6		$	9		$	15
Six Months Ended June 30,
Service cost	$	58		$	54		$	22		$	24
Interest cost	134			129			40			47
Expected return on plan assets	(215		)	(221		)	(41		)	(39		)
Amortization of prior service cost (credit)	2			2			(6		)	(7		)
Amortization of net loss	66			48			3			6
Settlements and curtailments	—			—			—			(1		)
Net periodic benefit cost	$	45		$	12		$	18		$	30